Department of Architecture Engineering, The Pennsylvania State University, USA.
Indoor Air. 2011 Aug;21(4):277-83. doi: 10.1111/j.1600-0668.2010.00699.x. Epub 2011 Jan 25.
To study the associations between dorm environment and occupants' health, a nested case-control study on 348 college students was carried out in 2006-2007 at Tianjin University, China. Two hundred and twenty-three dorm rooms where the 'cases' and 'controls' resided were inspected. Measured variables were ventilation rate, air temperature, and relative humidity indoors. Allergic symptoms in the last 12 months were self-reported by occupants. Adjusted odds ratios (AORs) of a 'localized moldy smell/moisture indicator' in 'special places' (e.g., in a room corner or close to the radiator under the window) for wheezing was 3.56 [95% Confident Interval (CI): 1.56-8.14] and for rhinitis 2.81 (95% CI: 1.32-5.97). The AOR of a low air change rate (below the median value of 0.7/h) for wheezing was 2.28 (95% CI: 1.38-3.75) and for dry cough 2.26 (95% CI: 1.08-4.75). The prevalence of students with allergic symptoms in dorm rooms decreased with increasing ventilation rate. The combination of a 'localized moldy/moisture indicator' and a low air change rate significantly increased the AOR of case status to 13.35 (95% CI: 3.73-47.83), compared to the reference condition with no-dampness and high ventilation rate (above the median). This supports the hypothesis that ventilation rate is an effect modifier for moisture problems and indoor pollutants.
为了研究宿舍环境与居住者健康之间的关系，于 2006-2007 年在中国天津大学对 348 名大学生进行了一项嵌套病例对照研究。对 223 间居住着“病例”和“对照”的宿舍进行了检查。测量变量包括室内通风率、空气温度和相对湿度。居住者自我报告了过去 12 个月的过敏症状。“特殊地点”（如房间角落或靠近窗户下的散热器）存在“局部发霉气味/潮湿指示物”的喘息调整后的优势比（AOR）为 3.56（95%置信区间[CI]：1.56-8.14），鼻炎为 2.81（95%CI：1.32-5.97）。空气交换率低（低于中位数 0.7/h）的喘息 AOR 为 2.28（95%CI：1.38-3.75），干咳为 2.26（95%CI：1.08-4.75）。随着通风率的增加，宿舍内学生过敏症状的患病率下降。与无潮湿和高通风率（高于中位数）的参考条件相比，“局部发霉/潮湿指示物”与低空气交换率的组合将病例状态的 AOR 显著增加到 13.35（95%CI：3.73-47.83）。这支持了通风率是湿度问题和室内污染物的效应修饰因子的假设。
